[linux-dvb] pid filtering

["Harald Dankworth" <Harald@Pronto.TV>]

I have some problems with the mpeg-2 mpts to mpeg-2 spts filtering in the
linux driver with a WinTV Nova card; during playback it seems like the pcr
is not correct. The playback is choppy if the demultiplexer does not support
resampling for correction of the pcr.

According to ISO/IEC 13818-1 page xiii:
"Figure 0-3 illustrates the second case, where a transport stream containing
multiple programs is converted into a transport stream containing a single
program. In this case the remultiplexing operation may necessitate the
correction of program clock reference (pcr) values to account for changes in
the pcr locations in the bit stream."

Thus, if the dvb driver drops packets from the mpeg-2 mpts there pcr should
be restamped. There is one paper covering the problem:
http://cairo.cs.uiuc.edu/HD/mse2002.pdf

Has anybody any thoughts about this?

Best regards,
Harald


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